Razorpay Payment Verification Failed in MERN Stack

When integrating Razorpay with a MERN stack application (MongoDB, Express, React, Node.js) , one issue appears again and again for developers: Payment succeeds on Razorpay, but backend verification fails. The payment popup shows “Payment Successful” , but your server rejects the request or does not store the payment in the database. This can break order confirmation, subscriptions, or digital product delivery. In this article, we’ll focus on one specific problem — Razorpay payment signature verification failure — and show exactly how to fix it. The Problem: Razorpay Payment Verification Failed After a user completes payment, Razorpay sends three important values to your frontend: razorpay_payment_id razorpay_order_id razorpay_signature Your backend must verify these values to confirm that the payment is authentic and not tampered with . However, many MERN developers get an error like: Payment verification failed Invalid signature Even though the payment was successful. Why This Happens